revamped _fetch_by_EnsObject_type to use a double outer join  with externalSynonym and identityXref so that that all synonyms and identities (similarities) are gotten in one SQL statement for speed.
revamped _fetch_by_EnsObject_type to use a double outer join  with
externalSynonym and identityXref so that that all synonyms and identities
(similarities) are gotten in one SQL statement for speed.

james-monkeyshines/ensembl,muffato/ensembl,danstaines/ensembl,danstaines/ensembl,at7/ensembl,muffato/ensembl,Ensembl/ensembl,danstaines/ensembl,mjg17/ensembl,Ensembl/ensembl,at7/ensembl,Ensembl/ensembl,mjg17/ensembl,james-monkeyshines/ensembl,mjg17/ensembl,muffato/ensembl,willmclaren/ensembl,willmclaren/ensembl,james-monkeyshines/ensembl,at7/ensembl,james-monkeyshines/ensembl,muffato/ensembl,Ensembl/ensembl,mjg17/ensembl,at7/ensembl